Product Description

Basic Info

Model No.: 50-1000t/d

Product Description
Our vegetable oil and fat refining line is used to refine various oils, including soybean oil, rapeseed oil, cottonseed oil, peanut oil, sunflower seed oil, maize germ oil, and rice bran oil. This production line features a capacity of 30-1,000 tons of crude oil per day, and is CZPT to eliminate plasticizer (DEHP) pollution and prevent the formation of trans fatty acids (TFA) in an efficient manner. According to different kind of crude oils,we will use different refining process. Chemical refining technology and physical refining technology are 2 kinds of refining process.
Process Workflow
One: Refining Workshop
Degumming and Neutralization → Bleaching→ Dewaxing→ Deodorization 
Two: Phospholipid Workshop
Crude Oil Filtration → Degumming → Phospholipid Concentration and Drying 

Three: Automatic Control System

(1) Degumming and Neutralization
Devices
mixer, reactor, heat exchanger, acid and alkali dosing device, separator, vacuum dryer, vacuum system

Features

For specific kind and grade of crude oil , the degumming and neutralization process can be flexibly adjusted to improve product yield. Physical refining process is suitable for refining of high acid value oil. Efficient system of heat exchanging can reduce the consumption of steam significantly. Devices used in the process are all well sealed, which efficiently prevents air from entering and further avoids oil oxidation.

 

 

(2) Bleaching

Devices
Bleaching earth feeder,Pre-mixer ,Bleaching tank,filter,Bleaching vacuum system

Features
The oil from neutralization section is mixed with bleaching earth for removal of pigments. The bleaching earth is transported in pneumatic mode, thus efficiently alleviate environment pollution caused by dust. The precise feeding system is used to quantify the bleaching earth, which contributes to accurate measurement and easy operation.

Mechanical agitation is carried out in the bleaching tower to ensure complete contact between the bleaching earth and the oil. As a result, stable and reliable performance and great bleaching effect can be achieved. Then, the bleaching earth is filtered out in vertical pressure leaf filters. It`s worth mentioning that there are 2 leaf filters, which work alternatively to improve service life. The bleached oil will go through a security filter for precision filtration. In this way, qualified bleached oil will be obtained.

 

 

(3) Dewaxing

Devices
crystallizer, maturing tank, heat exchanger, cooler, horizontal filter, filter press, conveyor and feeding device for filter aid and auxiliary devices including refrigerant unit, refrigerant circulating system, compressed air system and circulating water system

Features
Oils like sunflower oil or corn germ oil have waxes present in them. At low temperature, these waxes gives hazy appearance to oil, which is not liked by consumers. It is therefore essential to remove these waxes prior to bottling and marketing of oil.

In our dewaxing process, continuous crystallization and crystal growth help to improve dewaxing efficiency significantly, thus reducing energy consumption and production cost. The oil after dewaxing have high quality and can passes national standards and even some strict standards.
 

 

(4) Deodorization

Devices 
deodorization tower, fatty acid collecting system, vacuum system, heat exchanger, cooler, canned motor pump and auxiliary devices including high pressure steam boiler (thermal oil furnace) and circulating water system

Features
Every vegetable oil has its own distinct natural odour. In addition, extra unpleasant odour is imparted to the oil during degumming and bleaching processes. Hence, it is essential to remove the odour from the bleached oil.

In the deodorization section, deodorization tower used is made up with filling plates and column trays to accommodate deodorization of various oils, especially physical refining process. During deodorization, steam jet vacuum pump is sharply cooled by circulating cool water, thus creating a high vacuum status, which helps to carry away odoriferous matter to the barometric condenser and reduces steam consumption and waste water emission. As a result, production environment will be improved and less installation space will be required. Furthermore, based on quality of crude oil, technological parameters of the process can be flexibly adjusted to prevent formation of trans-fatty acids.

 

(5) Crude Oil Filtration
Devices
leaf filter (vertical and horizontal), oil pump, storage tank, compressed air system

Features
The process is designed to remove particulate matter from crude oil prior to refining process. Hence, product yield and quality are greatly improved for sequential processes. It is very convenient and easy to upload the particles since the process features high level of mechanization. There are 2 filters, which work alternatively to extend service life.

(6) Phospholipid Concentration and Drying

Devices

conditioning tank, film evaporator, vacuum system, phospholipid cooling device, phospholipid delivery pump, storage tank

Features
The film evaporator adopted features high precision rotor and shell, large heat transfer coefficient, great evaporation intensity, low evaporation temperature and short staying time of materials. The vacuum system is designed with dividing-wall condensing system, which prevents waste water emission and therefore eliminate environment pollution.

 

(7) Automatic Control System

In the master control room, an efficient, stable and advanced DCS control system is equipped, which consists of operation station, control station and communication network.

Features
The control system is characterized by high reliability, stability, great resistance to disturbance. It is also designed with features of remote monitor and fault diagnosis.

Every stage of the whole production line is dynamically and clearly displayed on the computer screen at the operation station. User-friendly human machine interface contributes to great convenience. Users can start or stop motors and electrical equipment just using the computer. In addition, it is very convenient to print relevant reports when it is required.

Acquisition and control of parameters are all accomplished by the programme written in the control station. In this way, operation station only undertakes things such as operation, parameter display, data record and data storage. As for important parameters, the control system is CZPT to ensure automatic control, data storage and alarm when values of these parameters exceed preset limit values.

PROFIBUS field bus network ensures rapid and reliable communication. Open ODBC and OLE standard interfaces are also equipped in the control system, which facilities communication with the host computer and other control systems.

 

We also provide the following project and equipment:
Oilseed Pretreatment Project
Oilseed Pressing Project
Oil Extraction Project 
Oil Refining Project 
Cottonseed Miscella Refining Project
Low Temperature and Edible Soybean Meal Project
Soy Protein Concentrate Project
Soy Protein Isolate Project
Cottonseed Protein Project
Full Fat Soybean Powder Project
ASME Pressure Vessel 
ASME Heat Exchanger 
Looking for ideal Oil Degumming Neutralization Machine Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Oil Bleaching Deodorizing Machine are quality guaranteed. We are China Origin Factory of Oil Dewaxing System. If you have any question, please feel free to contact us.

Analytical Approaches to Estimating Contact Pressures in Spline Couplings

A spline coupling is a type of mechanical connection between 2 rotating shafts. It consists of 2 parts – a coupler and a coupling. Both parts have teeth which engage and transfer loads. However, spline couplings are typically over-dimensioned, which makes them susceptible to fatigue and static behavior. Wear phenomena can also cause the coupling to fail. For this reason, proper spline coupling design is essential for achieving optimum performance.

Modeling a spline coupling

Spline couplings are becoming increasingly popular in the aerospace industry, but they operate in a slightly misaligned state, causing both vibrations and damage to the contact surfaces. To solve this problem, this article offers analytical approaches for estimating the contact pressures in a spline coupling. Specifically, this article compares analytical approaches with pure numerical approaches to demonstrate the benefits of an analytical approach.
To model a spline coupling, first you create the knowledge base for the spline coupling. The knowledge base includes a large number of possible specification values, which are related to each other. If you modify 1 specification, it may lead to a warning for violating another. To make the design valid, you must create a spline coupling model that meets the specified specification values.
After you have modeled the geometry, you must enter the contact pressures of the 2 spline couplings. Then, you need to determine the position of the pitch circle of the spline. In Figure 2, the centre of the male coupling is superposed to that of the female spline. Then, you need to make sure that the alignment meshing distance of the 2 splines is the same.
Once you have the data you need to create a spline coupling model, you can begin by entering the specifications for the interface design. Once you have this data, you need to choose whether to optimize the internal spline or the external spline. You’ll also need to specify the tooth friction coefficient, which is used to determine the stresses in the spline coupling model 20. You should also enter the pilot clearance, which is the clearance between the tip 186 of a tooth 32 on 1 spline and the feature on the mating spline.
After you have entered the desired specifications for the external spline, you can enter the parameters for the internal spline. For example, you can enter the outer diameter limit 154 of the major snap 54 and the minor snap 56 of the internal spline. The values of these parameters are displayed in color-coded boxes on the Spline Inputs and Configuration GUI screen 80. Once the parameters are entered, you’ll be presented with a geometric representation of the spline coupling model 20.

Creating a spline coupling model 20

The spline coupling model 20 is created by a product model software program 10. The software validates the spline coupling model against a knowledge base of configuration-dependent specification constraints and relationships. This report is then input to the ANSYS stress analyzer program. It lists the spline coupling model 20’s geometric configurations and specification values for each feature. The spline coupling model 20 is automatically recreated every time the configuration or performance specifications of the spline coupling model 20 are modified.
The spline coupling model 20 can be configured using the product model software program 10. A user specifies the axial length of the spline stack, which may be zero, or a fixed length. The user also enters a radial mating face 148, if any, and selects a pilot clearance specification value of 14.5 degrees or 30 degrees.
A user can then use the mouse 110 to modify the spline coupling model 20. The spline coupling knowledge base contains a large number of possible specification values and the spline coupling design rule. If the user tries to change a spline coupling model, the model will show a warning about a violation of another specification. In some cases, the modification may invalidate the design.
In the spline coupling model 20, the user enters additional performance requirement specifications. The user chooses the locations where maximum torque is transferred for the internal and external splines 38 and 40. The maximum torque transfer location is determined by the attachment configuration of the hardware to the shafts. Once this is selected, the user can click “Next” to save the model. A preview of the spline coupling model 20 is displayed.
The model 20 is a representation of a spline coupling. The spline specifications are entered in the order and arrangement as specified on the spline coupling model 20 GUI screen. Once the spline coupling specifications are entered, the product model software program 10 will incorporate them into the spline coupling model 20. This is the last step in spline coupling model creation.

Analysing a spline coupling model 20

An analysis of a spline coupling model consists of inputting its configuration and performance specifications. These specifications may be generated from another computer program. The product model software program 10 then uses its internal knowledge base of configuration dependent specification relationships and constraints to create a valid three-dimensional parametric model 20. This model contains information describing the number and types of spline teeth 32, snaps 34, and shoulder 36.
When you are analysing a spline coupling, the software program 10 will include default values for various specifications. The spline coupling model 20 comprises an internal spline 38 and an external spline 40. Each of the splines includes its own set of parameters, such as its depth, width, length, and radii. The external spline 40 will also contain its own set of parameters, such as its orientation.
Upon selecting these parameters, the software program will perform various analyses on the spline coupling model 20. The software program 10 calculates the nominal and maximal tooth bearing stresses and fatigue life of a spline coupling. It will also determine the difference in torsional windup between an internal and an external spline. The output file from the analysis will be a report file containing model configuration and specification data. The output file may also be used by other computer programs for further analysis.
Once these parameters are set, the user enters the design criteria for the spline coupling model 20. In this step, the user specifies the locations of maximum torque transfer for both the external and internal spline 38. The maximum torque transfer location depends on the configuration of the hardware attached to the shafts. The user may enter up to 4 different performance requirement specifications for each spline.
The results of the analysis show that there are 2 phases of spline coupling. The first phase shows a large increase in stress and vibration. The second phase shows a decline in both stress and vibration levels. The third stage shows a constant meshing force between 300N and 320N. This behavior continues for a longer period of time, until the final stage engages with the surface.

Misalignment of a spline coupling

A study aimed to investigate the position of the resultant contact force in a spline coupling engaging teeth under a steady torque and rotating misalignment. The study used numerical methods based on Finite Element Method (FEM) models. It produced numerical results for nominal conditions and parallel offset misalignment. The study considered 2 levels of misalignment – 0.02 mm and 0.08 mm – with different loading levels.
The results showed that the misalignment between the splines and rotors causes a change in the meshing force of the spline-rotor coupling system. Its dynamics is governed by the meshing force of splines. The meshing force of a misaligned spline coupling is related to the rotor-spline coupling system parameters, the transmitting torque, and the dynamic vibration displacement.
Despite the lack of precise measurements, the misalignment of splines is a common problem. This problem is compounded by the fact that splines usually feature backlash. This backlash is the result of the misaligned spline. The authors analyzed several splines, varying pitch diameters, and length/diameter ratios.
A spline coupling is a two-dimensional mechanical system, which has positive backlash. The spline coupling is comprised of a hub and shaft, and has tip-to-root clearances that are larger than the backlash. A form-clearance is sufficient to prevent tip-to-root fillet contact. The torque on the splines is transmitted via friction.
When a spline coupling is misaligned, a torque-biased thrust force is generated. In such a situation, the force can exceed the torque, causing the component to lose its alignment. The two-way transmission of torque and thrust is modeled analytically in the present study. The analytical approach provides solutions that can be integrated into the design process. So, the next time you are faced with a misaligned spline coupling problem, make sure to use an analytical approach!
In this study, the spline coupling is analyzed under nominal conditions without a parallel offset misalignment. The stiffness values obtained are the percentage difference between the nominal pitch diameter and load application diameter. Moreover, the maximum percentage difference in the measured pitch diameter is 1.60% under a torque of 5000 N*m. The other parameter, the pitch angle, is taken into consideration in the calculation.